Testing and finite element analysis of internal mechanical properties of compressed concrete

Abstract

Abstract In order to conduct intensive research on the inside stress-strain curve relationship of compressed concrete, a novel relevant testing device was developed and embedded inside concrete specimens and we conducted conventional uniaxial compression loading tests on concrete specimens. Based on experimental data, combined with several typical constitutive equations of concrete, simulation is conducted on the experiment. The results show that the core area inside the concrete has good ductility compared to the other parts, and the measured constitutive curve inside the concrete is reasonable and accurate, which is in good agreement with the finite element simulation results based on Chinese standards. It proves that the relevant measurement methods have fine accuracy and applicability, and can be further promoted and used.